[Image-SIG] using getcolors( ) properly

[Eduardo Ismael]

Hi,

I had no success using im.getcolors(). I now there is something you have to do to avoid getting None as a result, but I could not understand the following from the manual:
"To make sure you get all colors in an image, you can pass in size[0]*size[1]" 
Can anyone give an example of passing in "size[0]*size[1]"?
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